Corn-crib



(No Model.)

J. Z. BENSON.

CORN GRIB. No. 458,936. Patented Sept. 1, 1891.

ATTORNEY.

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NITED STATES PATENT OFFICE.

J OHN Z. BENSON, OF LAVN HILL, IOXVA.

CORN-CRIB.

SPECIFICATION forming part of Letters Patent No. 458,936, datedSeptember 1, 1891.

Application filed April 24, 1891. Serial No. 390,272. (No model.)

T0 at whom it may concern:

Be it known that I, JOHN Z. BENSON, of Lawn Hill, in the countyof Hardinand State of Iowa, have invented a new and Improved Crib-Door, of whichthe following is a full, clear, and exact description.

My invention relates to improvements in doors for corn-cribs and othergranaries, and which is also adapted for use on vehicles.

The object of myinvention is to produce a simple and convenient form ofdoor which may be adjusted so as to afford ventilation for the crib orother building or vehicle in which it is secured, which is adapted foradjustment to suit the various kinds of grain, and which is constructedin such a manner that it may be arranged so that the grain may be easilyremoved.

To this end my invention consists in a door constructed substantially ashereinafter described and claimed.

Reference is'to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a vertical section of a door embodying my invention, showingthe same applied to a crib. Fig. 2 is a broken front elevation of thesame, the door being open. Fig. 3 is a sectional view and shows theapplication of the door to a wagon-body; and,Fig. a is a broken detailview of one of the slides.

The crib 10 is provided with the usual verticalside walls 11, in one ofwhich is set the door-frame 12, which is arranged so that it willproject inward beyond the wall 11, and this frame is provided with aswinging portion 13,which is adapted to close the opening through theframe, and which is substantially like an ordinary door. On oppositesides of the frame are vertical side pieces 14, which are provided atintervals with inwardly-inclined grooves 15,in which fit slides 16,which slides extend transversely between two side pieces, and thegrooves 15 in the said side pieces are arranged so as to have differentinclinations, in order that the slides may be adjusted according to thekind of grain that is held in the crib, as will be hereinafterdescribed. The slides 16 are provided at the ends and on their outeredges with projecting shoulders 1.7, which extend beyond the edges ofthe grooves 15, and thus prevent the slides from dropping down throughthe grooves.

hen the device is applied to a wagonbody,the wagon 18 is provided withthe usual end-board 19, and the door is secured in the wagon-body justforward of the end-board 19, and it is obvious that the height of thedoor should correspond approximately with the depth of the wagon-body.The door may also be applied to a railway-car, or it may be applied toany receptacle adapted to hold grain. The door is used in the followingway: The lower slides of the frame are preferably arranged in thegrooves having the greatest inclination, so that the bottom slide willrest on the bottom of the crib and prevent any of the grain from runningout, and the slides above are arranged in the grooves of the greatestinclination or in those of less inclination, according as the grain isfine or coarse, as it is obvious that it will be necessary to givethemgreat inclination where the grain is fine, as otherwise it will workthrough between the slides and run to waste. It will be seen byreference to Fig. 1. that there is an air-space between the severalslides,and when the crib is filled with the grain the air will passinward between the slides and into the crib, so as to ventilate thesame, and the inclination of the slides will prevent the grain fromrunning out between them. \Vhen a small portion of grain is to beremoved from the crib, one of the slides is drawn out and a portion ofthe grain is allowed to run into a receptacle which may be arranged toreceive it, and if the grain is to be shoveled out one or more of thebottom slides are removed, and the grain may then be easily shoveled upfrom the floor. Where the door is to be used in a wagonbody or in a car,the operation is substantially the same. hen the door is to be used forventilating purposes, the swinging portion 13 is thrown open, so thatthe air may pass freely between the slides.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The eombinatiomin a crib-door, with thedoor frame having on its sides inclined grooves open from end to end toprevent the lodgment of grain, of slides fitting in the ferent anglefrom those of the other series, of grooves and provided at their outercorners a series of slides adapted to fit the grooves of IO withshoulders projecting beyond the grooves either series, according to thecharacter of the to limit the inward movement of the slides, grain,substantially as set forth.

5 substantially as set forth. JOHN Z. BENSON.

2. The cornbinatiomin a crib-door, with the Witnesses: door-frame havingseries of inclined grooves, ROBERT SMITH,

the grooves of one series extending at a dif- LAUREN A. BENSON.

